The wind-averaged drag coefficient provides a means of assessing the aerodynamic performance of a road vehicle in relation to the wind conditions encountered in-service. This report provides justification for its use, together with details of a study of the various approximations which can be made in its evaluation. The choice of a suitable height at which to define the wind speed is discussed, as are techniques for correcting observed wind speeds to this standard height. Appendix 1 contains a description of a computer program for evaluating wind-averaged drag coefficients which is at present in use at TRRL. (DePo)


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    Title :

    The wind-averaged drag coefficient applied to heavy goods vehicles


    Additional title:

    Berechnung des Luftwiderstandes von schweren Lastkraftwagen mittels Rechnerprogrammen


    Contributors:

    Published in:

    Publication date :

    1978


    Size :

    24 Seiten


    Type of media :

    Report


    Type of material :

    Print


    Language :

    English